In coagulating the colloidal sol of As(2...

In coagulating the colloidal sol of `As_(2) S_(3)` which of these has the minimum coagulating value?

A

NaCl

B

KCl

C

`BaCl_(2)`

D

`AlCl_(3)`

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The correct Answer is:

D

`As_(2)S_(3)` is negatively charged sol so more positively charged ion will have minimum coangulating value.

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